harrison



No. 608,37,` Patented Aug. 2, |898. w. F. HAnmsoN.

THBOTTLE VALVE.

(Application led Sept. 80, 1897.)

2 Sheets-Sheet l.

No. 608,l97. Patented Aug. 2, |898.

W. F. HARRISUN. l THROTTLE VALVE.

(Application med Sept. 30, 1897.)

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`WILLIAM F. HARRISON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE PRATT daCADY COMPANY, OF SAME PLACE.

THRoi'Tris-VALVE.`

SPECIFICATION forming part of Letters Patent No. 608,197, dated August2, 18981. Application nea scptemtr 30,1897. seh-.i1 No. 653,582. (Nomodem To all whom it may concern:

Be it known that I, WILLAM F. HARRISON, a citizen of the United States,residing-at Hartford, in the county of I -Iartford and State ofConnecticut, have invented certain newV and useful Improvements inThrottle-Valves, of which the following is a specification.

This invention relates to those throttlevalves which are arranged sothat they may, from the immediate vicinity or from distant points, beset in operation and caused to stop the iiow of fluid in thesupply-pipes withwhich they are connected.

The object of the invention is to provide a simple, inexpensive, anddurable valve of this nature having a stop-disk which when the spindleis turned to open the valve will first move slowly, and then after thepressure of the fluid is relieved will move rapidly and open veryquickly to a position where it will be held by a catch until released,and when the catch is tripped will be moved very rapidly in a reversedirection by automaticallyoperating closing means which act quickly andshut the valve tightly.

The embodiment of the invention illustrated in the accompanying drawingshas a valve-disk connected With a spindle thatis so supported as to haveimparted when rotated for opening or closing the valve a longitudinalmovement which results from the joint actions of several threaded partsthat are brought into combined operationV by their peculiar engagement,the spindle when the valve is open being held from rotation by a catchthat is adapted to be tripped byl mechanism operated from near at handor from distant points, as the emergency arises, and when released beingrotatedautomatically by mechanisms in whichl power for this purpose isstored by the act of rotating the spindle for opening the valve, as moreparticularly hereinafter described, and pointed out in the claims.

Figure 1 of the views shows a throttle-valve which embodies theinvention, parts of this i figure being cut in section to illustrate theconstruction. Fig. 2 shows a view of the hand-wheel end of this valve.Fig. 3 shows a section taken on plane -indicated by the Fig. 4 shows abroken line X X of Fig. 1.

detail section of a portion of a valve with a valve-disk of differentconstruction.

The body 1 of the valve maybe cast of iron, brass, or any other suitablemetal to any approved shape, with ilanged or screw-threaded ends, asdesired, for attachment to the pipes of the n system with which it is tobe used. Thevalve-seat may be formed in the interior of the body in anyconvenient manner, that 4shown being formed on the edge of a ring 2,

that is threaded and screwed into a threaded recess in the walls of thebody on one side of the disk-chamber, which is preferably provided withdisk-guiding ribs 3.

A cover 4t is secured to the open end of the body in the customarymanner, and throughv by casting a suitable fine metal intothe in-`terior of the end of the baser-metal frame.

Supported by this bushing is an outer sleeve 9. This outer sleeve isprovided with exterior threads that iit the threadsin the bushing S, and`itis also provided with interior threads that iit exterior threads onanr inner `sleeve 10. The inner sleeve 10 also has interior threadsthatv fit and mesh with threads on a portion of the spindle 5. Thisinner sleeve 10 bears adcollar 11, which has outwardly-projecting lugs12, that move between ribs 13, formed on the frame, so that the sleeve10 is held from rotation as it is reciprocated. The outer sleeve 9supports a collar 14C, provided with outwardly-extending lugs 15 and 16,Fig. 1, and 17, Fig. 2. Secured to the end of the spindle is a handwheel18, and attached to this `is a drum l), around which is wound acord 20,that supports a weight 21. Vhen the hand-wheel is turned in onedirection, the cord is wound up and the weight lifted, `and then -whenthe hand-Wheelwis free the Weight will unwind the cord and rotate thehand-Wheel and connected spindle in the opposite direction. 4It desired,of course, this power can be obtained by means of a spring instead ofthe cord and weight shown.

Projecting inwardly from a part of the handwheel is a lug 22. In achamber in the walls of the Vframe is an outwardly-thrust spring,- bolt23, and engaging with this is a lever 24. The outer end of thisspring-bolt projects into the path of the lug 17 except when it is drawninwardly by a movement of the lever 24.

When the hand-wheel is turned to open the valve, the spindle rotates andsimply travels outward with a movement that is determined by the pitchof its own thread that meshes with the interior thread of the innersleeve 10 until the lug 22 on the hand-wheel engages with the lug 15 onthe collar 14. Then further rotation of the hand-wheel in the samedirection with these lugs 22 and 15in engagement rotates the outersleeve 9, with which the collar 14, bearing the lug 15, is connected.The rotation of the outer sleeve 9 causes that sleeve to travel outwardwith a movement that is determined by the pitch of its exterior threadthat engages with the interior thread in the stationary bushing S at theend of the frame. This longitudinal outward movement of the outer sleeveS) carries out the inner sleeve l0, and the rotation ot the outer sleeve9 also, through the meshing of its interior thread, causes the innersleeve 10, that does not rotate, to be moved outward still faster. Ot'course as the inner sleeve 10 moves outward it carries the spindlebodily, and this, addedto the natural travel of the spindle incident tothe pitch of its own thread, causes the spindle to be movedlongitudinally very fast and the valve-disk to be drawn away from theseat, so as to open the valve Very rapidly.

When the valve is fully opened, the lug 17 is in position to be engagedby the springbolt 23, so that the collar 14 and outer sleeve cannot berotated in a reverse direction until the bolt is withdrawn from in frontof this lug. The rotation of the hand-wheel winds up the weight-cord orspring, as the ease may be, and stores up power for moving the parts ina reverse direction. NVhen the hand is removed from the hand-wheel afterwindin g up,

the hand-wheel will rotate backward freely under the influence of theweight or spring vuntil the lug 22 moves from contact with the lug 15into contact with the lug 16 in position by engagement with that lugwhen the bolt is withdrawn to rotate the collar 14 and sleeve 9, so asto close the valve. This initial movement causes the spindle to travelinward the distance it iirst moved outward under the pitch of its ownthread in the sleeve 10, so that when the catch is released and theparts are rotated by the weight the disk will be carried back closeagainst the seat and the valve tightly shut. The trip-lever can beoperated by hand or by a cord or wire leading to any distant locality,or by electrical or other common means that are employed for movingtripping devices and which do not form a part of this invention.

This quick-operating mechanism may be applied to a small or relief valveattached to a larger valve, as shown in Fig. 4. In this case the smallvalve-disk 25 is drawn from its seat on the large valve-disk 26 by theinitial rotation and outward traveling of the spindle under its ownthread. This opens the valve, so that a portion of the pressure on thelarge disk is relieved, and then when the threaded sleeves commen ce todraw the spindle rapidly the parts so engage that the large disk isdrawn quickly from its seat. In closing this form the small disk will beshut against its seat by the rotation of the spindle when the valve isopen and the opening power is removed from the hand-wheel; Then whenthe' catch is tripped the two disks will move together very rapidly andshut the valve tightly.

A valve embodying this invention can be opened very slowly when the diskis subjected to pressure, and then when the pressure is relieved can beopened very rapidly. This valve can be arranged so as'to beautomatically closed from distant points when an emergency, like anaccident to an operative or breaking of machinery, occurs and requiresthat the engine be stopped at once, and when this valve thus arranged istripped it will act so quickly that the fluid in the supply-pipe will bealmost instantly cut off and the engine stopped. The mechanism of thisvalve is simple and inexpensive to manufacture, not liable to get out ofrepair, positive in operation, and always ready for action.

I claim as my invention- 1. A throttle-valve having a body, a Valvediskwithin the body, a spindle connected with the disk, a sleeve with athread fitting a thread on the spindle whereby longitudinal movement isimparted to the spindle when the spindle is rotated, and a connectionbetween the spindle and the sleeve whereby the sleeve is also given alongitudinal movement when the spindle is rotated, substantially asspecified. I

2. A throttle-valve having a body, a valvedisk within the body, aspindle connected with the disk, an inner sleeve with a thread fitting athread on the spindle whereby longitudinal movement is imparted to thespindle when the spindle is rotated, an outer sleeve connected with theinner sleeve, and a connection between the spindle and the outer sleevewhereby the inner sleeve is also given a longitudinal movement when thespindle is rotated, substantially as specified.

3. A throttle-valve having a body, a valvedisk within the body, aspindle connected with the disk, an inner sleeve with a thread fitting athread on the spindle, an outer sleeve connected with the inner sleeve,and means for rotating and also for moving longitudinally the outersleeve when the spindle is rotated, substantially as specified.

4. A throttle-valve having a body, a valve- IOO IIO

disk Within the body, a spindle connected With the disk, an inner sleeveWith a thread fitting a thread on the spindle,an outer sleeve with athread fitting a thread on the inner sleeve, and means for rotating andmoving longitudinally the outer sleeve when the spindle is rotated,substantially as specified.

5. A throttle-valve having a body, a valve-` disk Within the body, aspindle connected with the disk, an inner sleeve With a thread fitting athread on the spindle, an outer sleeve with a thread fitting a-thread onthe inner sleeve, means for rotating and moving longitudinally the outersleeve, and a trip device for automatically restraining the rotation ofthe outer sleeve, substantially as specified.

6. A throttle-valve having a body, a valvedisk Within the body, aspindle connected with the disk, an inner sleeve With a thread fitting athread on the spindle, an ou ter sleeve with a thread fitting a threadon the inner sleeve, a hand-Wheel connected With the spindle, and lugsconnected with the hand-Wheel and with the outer sleeve arranged toengage When the hand-Wheel is rotated, substantially as specified. Y

7. A throttle-valve having a body, a valvedisk Within the body, aspindle connected with the disk, an inner sleeve with a thread fitting athread on the spindle, an outer sleeve with a thread fitting a thread onthe inner sleeve, a hand-wheel connected with the spindle, lugsconnected With the hand-Wheel and with the outer sleeve arranged toengage When the hand-Wheel is rotated, and a catch connected With theframe and arranged to temporarily engage a lug connectedwith the outersleeve, substantially as specified.

8. A throttle-valve having a body, a valvedisk within the body, aspindle connected with the disk, an inner sleeve with a thread 9. Athrottle-valve having a body, a valvedisk Within the body, a spindleconnected with the disk, an inner sleeve With a thread fitting a threadon the spindle, an outer sleeve With a thread fitting a thread on theinner sleeve, a hand-Wheel connected with the spindle, lugs projectingfrom the hand-Wheel and from a part connected With the outer sleeve andarranged to engage When the hand-Wheel is rotated, a drum connected withthe hand- Wheel, means for rotating thel drum, and a catch fortemporarily holding the drum against rotation, substantially asspecified.

lO. A throttle-valve having a body, a main valve-disk Within the body, asupplemental valve-disk mounted upon the main valve-disk e and adaptedto have a small motion independently thereof, a spindle connected withthe supplemental disk, a sleeve witha thread fitting a thread on thespindle whereby longitudinal movement is imparted to the spindle Whenthe spindle is rotated, and a connection `between the spindle and thesleeve whereby the sleeve is also given a longitudinal move- `ment Whenthe .spindle is rotated, substantially as specified.

WILLIAM F. HARRISON.

Witnesses:

II. R. WILLIAMS, Jos. A. SWIFT.

